First I would like to say that this site is great! Just bought a FT-100 and ran some tests listed below. I live in IL and have my pool drained/power washed and acid washed before filling every spring.
CYA=55 ( Not sure how accurate..added 6lbs of CYA to the newly filled pool, 25k gallons)
I started on lowering the TA by reducing the PH to 7.2 and then waiting for it to rise by the water aeration. I just read this article http://www.poolspanews.com/bond-financi ... watch.aspx that states to subtract 30% of the CYA value from the TA value. Is this true? I haven't seen that stated on this site since I have been reviewing the forums.